Medicated insole



Nov. 24, 1936. LEI Q F 2,061,911

MEDICATED INSOLE Filed Oct '1, 1955 J; 4' i 14 1e J05 EPH R LE INDORF INVENTOR. BY 41 4 I ATTORNEY.

Fatented Nov. 24, E936 gash MEnIcs'rsn IINSDLE Joseph P. Eeindorf, Pelham Manor, N. Y. Application October I, 1935, Serial No. 43,956

2 Claims.

10 insoles impregnated with a layer of suitable mew dicaments which will impart an agreeable iragrance to the feet and shoes of the wearer.

Another object of this invention is to provide embossed insoles having suitable plastic medica- 15 ments in the upper depressions and air pockets in the lower depressions for insulating the stockings of the wearer from the soles of the shoes.

Another object of this invention is to provide,

. as a new article of manufacture, sanitary absorb- 20 cut and protective insoles which may be manufactured and distributed at a low cost consistent with discarding oi a pair of such articles almost daily by any user.

With the above and other objects in view, the invention will be hereinafter more particularly described and shown in the accompanying drawing and pointed out in the claims which form part of this specification.

Reference will now be had to the drawing, 30 wherein like numerals of reference designate corresponding parts throughout the several views, in which: I p

Figure 1 is a plan view of an insole embodying my invention.

35 Figure 2 is a sectional view, the section being taken as on line 22 in Figure 1,- upon an enlarged scale and with depth dimensions exaggerated. I 4

Figure 3 is a plan view of a modified insole 40 having embossed depressions alternately disposed all over the upper and lower surfaces oi the insole, the upper depressions being filled with plastic medicaments.

Figure 4 is a sectional view on an enlarged scale- 5 in the depth dimension of the insoleshown in Figure 3, the section being taken as on line 4-4.

In the illustrated embodiment of the invention, the numeral i indicates an insole made of a single sheet oi fibrous absorbent material 50 such as thin blotter board. The major portion of the depth of the board is impregnated with plastic medicaments having antiseptic properties and serving to prevent putreiacticn oi the sweat or perspiratory matter excreted from the wearer's s feet.v This absorbent portion Ii absorbs and retains the excess moisture from the foot of the wearer. The lower portion id of the insole is coated with a moisture repelling medium so as to insulate the shoe sole from the perspiration.

' When the insole is in use, the warm moisture from 5 the foot is sufiicient to slightly soften the plastic 'medicaments which soothe and heal the foot.

The lower side of the insole I preier to treat with a paraflin and wax compound of equal proportions forming a moisture repelling medium.

The insole is impregnated from the upper side with glycerin.

The constant pressure of the foot against the treated i'nsole causes a portion of the glycerin to penetrate the stockings, thus bringing the, skin in contact with some of the glycerin. The porous insole acts as a resorbent agent and absorbs the excessive perspiration. Glycerin is known to be helpful in cases of bromi'drosis. The substances which give rise to the clinical symptoms of bromidrosis such as indol and skatol are the products of bacterial action. The addition of glycerin to the medium in which the indol producing bacteria are growingprevents the formation of this substance and in place of an alkaline medium the 5' fermentation of the glycerin leads to the production of a marked acidity and so substitutes an acid for an alkaline medium. The glycerin prevents putrefaction' of the sweat.

As shown in Figures 3 and 4, there has been provided a modified medicated insole It made of a single sheet of fibrous absorbent material'such as thin blotter board and having embossed substantially square-shaped depressions i4 alternately disposed all over the upper.suriace' and embossed substantially square-shaped depressions is alternately disposed all over the lower surface of the insole. The depressions I4 and I! deform .the sheet in a vertical direction so that it is of considerable depth. The upper depressions ll 40 have been filled with plastic medicaments l6 havingantiseptic properties. The lower depressions .or cavities form air pockets serving to insulate the insole from the shoe insole. The lower surface of the insole I3 is coated with a liquid substance which will not melt at the body temperature such as collodion ll.

It is to be noted that the air pockets II are sep-- arated units and that there is no communication between adjacent air pockets lb or between said pockets and the upper surface 0! the insole.

Due to the weight 01 the person standing on the insole, the embossed and vertically distended paper gets pressed down and flattened out and causes the warmed medicaments to gradually rise 66 through the apertures in the stockings into direct contact with the feet of the user.

fine invention provides a cheap and substantially highly medicated insole to be inserted between the stockinged feet and the soles of the shoes for sanitary and protective purposes.

While the insoles serve as a protection against outside dampness and cold, they are especially beneficial for persons who are subject to profuse foot. perspiration. The absorbent body of the insole serves to absorb and retain the excess moisture from the foot which otherwise soils the sole of the shoe. The embossed insoles l3 also aflord a cushioning effect and protection against irregularities in the normal interior surface of the shoe sole.

The preparations which I presently prefer for filling the upper surface of the embossed insoles I! are as follows:

over a mild heat and stir in the camphor until dissolved. Add the phenol to the paraffin and wax. Also add the oil of pine and stir in the boric acid powder. Keep stirring and agitating till a thick smooth paste is formed. This. preparation must be kept on a moderately heated water bath as excessive heat would rapidly evaporate the phenol, camphor and oil..

Second preparation Parts Boric acid powder 15 Oil of eucalyptus 1 Mix the oil of eucalyptus with the boric acid powder.

The process of filling the depressions in the upper surface of the embossed insole I3 is as follows:

Lay the insole previously treated with the antiseptic flexible collodion on a smooth steel plate heated to about 135 F. (collodionized side down) and with the aid of a small trowel spread the heated paste till the depressions are partly filled. Spread the second preparation with a firm downward pressure and cover the partly filled depressions and form a smooth and unperforated level surface. Remove the insole from the hot plate and polish it with boric acid powder, using a woolen pad, till the cohvexed parts are perceptible and giving the surface a two-tone effect (dark and light squares or whatever the embossed design may be). The heated plate is utilized for two purposes. The heat renders the first preparation plastic and pliant and causes the second preparation (boric acid powder) to unite with the first preparation causing the boric acid powder to set firm in a plastic state.

The paraffin and wax serve as a vehicle for the boric acid powder and the volatilizing antiseptic oils and camphor. It is also used for the purpose of setting the foot on a plastic base where the toes and the heel make impressions and cavities which provide a comfortable resting place for each individual digit of the foot. Wax being flexible, would be a preferable filling material. However, due to the fact that wax is viscous or sticky, the paraflin is added because being brittle, it imparts an element of rigidity.

It is to be noted that the boric powder is set sufiiciently to remain united with the insole and still be in such plastic state as to be wiped into the stocking.

It is also to be noted that while I have shown the' insole l3 embossed with localized cavities impressed from opposite sides, that I may corrugate the flexible board with alternate ridges and valleys. Any thin, porous and flexible board yielding to impression and embossment may be used for the insoles.

, I claim: I I

1. An insole comprising a single sheet of flex ible board impressed from opposite sides to form separated and localized cavities, the cavities in one surface being alternately disposed with respect to the cavities in the opposite surface, the cavities in one surface being filled with plastic medicaments and said medicaments being entirely exposed all over the upper surface of said insole, the cavities in the opposite surface forming separated air pockets, said board being distended in a vertical direction and capable of being compressed when in use thus causing said plastic medicaments to be gradually raised above the upper surface of said board.

2. An insole comprising a single sheet of flexible materia1 impressed from opposite sides to form cavities, the cavities in one surface being filled with plastic medicaments and said medicaments being entirely exposed all over the upper surface of said insole, the cavities in the opposite surface forming separated air pockets, said insole being distended in a: vertical direction and capable of being compressed when in use thus causing said plastic medicaments to be raised above the upper surface of said sheet.

JOSEPH P. LEINDORF. 

